Display of fullscreen on smartphones, esp. iphones changed suddenly

Online experiments
1

OS : iphone & Android
PsychoPy version: 2025.2.4
What are you trying to achieve?:
First we let our participant download a consent through a link we give onscreen. That’s why we start the experiment in windowed mode. After that we switch to fullscreen with:
’’’psychoJS.window.fullscr = true;
psychoJS.window.adjustScreenSize();'‘‘

What specifically went wrong when you tried that?:
The display after switching to fullscreen looked good during tests on 05.February.2026

On 06.February.2026 the displayed stuff was cut off at left/right on iphone+ipad on several browsers.
(Also the display on Android changed a little)
There have been code changes meanwhile, but after i reverted them to the state of 05.February, the display kept cut off.

Question:
Have there been changes on the server this week that could explain a change in display on smartphones?

2

Please could you check what happens with this link?

I’ve just checked and on my Android phone it doesn’t seem to go back to full screen (whereas it does on my desktop).